<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>css_内嵌样式表</title>
    <style>
        .center {text-align: center}
        p.bc
        {background-color: #05B2D2}
        body {background-color: #bbbbbb}
    hr {color: #0b2e13}
    strong {color: #D2413A}
    </style>

</head>
<body>
<h1 class="center;bc">测试css类选择器</h1>
<p class="bc">正文正文正文</p>
<hr>
<p class="bc"><strong>我相信未来其实并不远</strong></p>
</body>
</html>